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                <h1 class="article-title"><a href="article.html">php如何判断一个日期的格式是否正确</a></h1>
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          <time class="time" data-toggle="tooltip" data-placement="bottom" title="时间：2016-1-4 10:29:39"><i
                  class="glyphicon glyphicon-time"></i> 2016-1-4 10:29:39</time>
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                        title="来源：第一PHP社区"><i class="glyphicon glyphicon-globe"></i> 第一PHP社区</span> <span
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                        title="栏目：后端程序"><i class="glyphicon glyphicon-list"></i> <a href="program"
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                <p><img data-original="../../static/images/banner/banner_03.jpg"
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                <p> 用php获取上个月最后一天的时间，有两种方法，都非常简单，详细实现源码如下： </p>

                <p> 方法一是利用当前时间离本月初有多少时间，然后用当前时间减去这个时间差，就可以得到上月最后一天了。 </p>
                <p> 方法二是先计算本月多少号，即离月初有多少天，然后用strtotime计算出$day天前的时间戳，也可以得到上个月的最后一天。 </p>
                <p class="article-copyright hidden-xs">未经允许不得转载：<a href="">异清轩博客</a> » <a href="article.html">php如何判断一个日期的格式是否正确</a>
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